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JE Pistons Subaru EJ257 Ultra Series 8.5:1 (Set of 4) 361328

Retail Price:

$654.99

Price Match

SUBARU EJ25 ULTRA SERIES
Ultra Series Includes: 

Grain Flow Optimized Forging 
Lateral Gas Ports 
Ceramic Crown Coating 
Perfect Skirt Coating 
Accumulator Groove 
Double Broach Pin Oiling 
Upgraded 9310 Pins and locks 
Carbon Steel Nitride Rings

JE Pistons - 361328 - Ultra Series - Subaru - EJ25 - Piston and Ring Kits

JE Pistons Sport Compact Pistons are specifically engineered for extreme applications up to, and including, professional competition. In this environment, higher compression ratios, extreme boost levels and, heavy nitrous usage necessitate the higher tensile strength 2618 aluminum alloy. The JE Piston Sport Compact Piston has a dome/dish that requires no deburring or preparation plus features a smooth flowing radii for excellent flame travel.

  • Manufacturer's Part Number: 361328
  • Category: Piston and Ring Kits
  • Product Type: JE Pistons Ultra Series
  • Fitment: Subaru STI EJ255 / EJ257
  • Bore Size (mm): 99.75
  • Oversize (mm): .25
  • Stroke (mm): 79.0
  • Rod Length (mm): 130.5
  • C/D (mm): 30.7
  • Head CC's: 57
  • Compression Ratio (with .026): 8.5:1
  • Dish/Dome CC: -16.9
  • Gram Weight: 429
  • Footnote: T
  • Skirt Type: F
  • Ring Set Included: JG4904-3927
  • JE ProSeal Head Gasket: SB1001-039
  • Quantity: Sold as a kit.
  • Notes: 2004+ Impreza STI / 2005+ Forester XT / Legacy GT / 2006+ WRX EJ255 / EJ257
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